Ni3B as a highly efficient and selective catalyst for the electrosynthesis of hydrogen peroxide
Ni3B as a highly efficient and selective catalyst for the electrosynthesis of hydrogen peroxide
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Ni3B作为一种高效、选择性的催化剂用于电合成过氧化氢
DOI:
10.1016/j.apcatb.2020.119371
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发表时间:
2020-12
期刊:
影响因子:
--
通讯作者:
Baibiao Huang
中科院分区:
文献类型:
--
作者:
Fahao Ma;Shuhua Wang;Xizhuang Liang;Cong Wang;Fengxia Tong;Zeyan Wang;Peng Wang;Yuanyuan Liu;Ying Dai;Zhaoke Zheng;Baibiao Huang
Electrocatalytic synthesis of hydrogen peroxide (H2O2) via the two-electron oxygen reduction reaction (2e−ORR) is an ideal method for the on-site H2O2production. Herein, Ni3B is identified as an active, selective, and stable catalyst for ORR to generate H2O2, which exhibits a high selectivity of over 90 % and an onset potential of ∼0.7 V versus the reversible hydrogen electrode (RHE). Furthermore, the mass activity of Ni3B is about 16.5 A g-1at 0.52 V (RHE), which is comparable to some noble metal alloys. Our experimental results suggest that the high performance of Ni3B originates from the alloying process of Ni and B atoms. The density functional theory calculations reveal that the inner B atoms with high electronegativity decrease the state density of Ni-3d orbital near the Fermi level relative to Ni, which optimizes the binding energy of OOH* and makes Ni3B a highly efficient and stable catalyst for the two-electron ORR.
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影响因子:
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作者:
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通讯作者:
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